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This paper presents two methods used for three closed loop speed controller of Variable- Voltage Variable-Frequency (VVVF) triple 3-phase Induction Motors (IMs) master/slaves system. A dynamic d-q model of a 3- phase IM in state space form and its computer simulation in MATLAB/SIMULINK software package are described. The two different methods of speed control which are used to improve the performance of three IMs drive system are named as conventional PI controller and PID controller. For PID speed controller, simulation results clearly show that the response of the system is superior compared to PI speed controller in terms of rise time, settling time, accuracy and steady state error. The design, analysis, and speed responses of the system obtained under both controllers have been simulated, studied and compared using MATLAB/Simulink environment for different operating conditions such as sudden change in reference speed and load torque. The simulation results showed good synchronization between the master and the slave IMs with suitable tracking error.
هذا البحث استعرض طرقتين استخدمتا للسيطرة على سرعة نظام مغلق الحلقة متغير الجهد والتردد لثلاثة محركات حثية ثلاثية الطور D )السيد/التوابع). تم تمثيل النموذج الديناميكي - للمحرك الحثي الثلاثي الطور بشكل فضاء الحالة و نتائج Q المحاكاة له بأستخدام حزمة البرامجيات . طريقتي التحكم بالسرعة اللتين استخدمتا لتحسين MATLAB/SIMULINK اداء نظام سوق ثلاثة محركات حثية تسميان متحكم الكسب التقليدي التكاملي ومتحكم الكسب التكاملي التفاضلي. بدا واضحا من نتائج المحاكاة ان استجاب النظام لمتحكم السرعة التناسبي التكاملي التفاضلي كانت افضل مقارنة لمتحكم التناسب التكاملي من حيث زمن الصعود, زمن الاستقرار, الدقة وخطأ الحالة المستقرة. تصميم, تحليل, استجابات سرع النظام لكلا المتحكمين لظروف تشغيل مختلفة مثل التغير المفاجئ MATLAB/SIMULINK تمت محاكاتها, دراستها ومقارنتها بأستخدام بيئة في السرعة المرجعية وتحميل عزم الدوران. وأظهرت نتائج المحاكاة مزامنة جيدة بين سيد وتابع المحركات الحثية مع تتبع مناسب للخطأ.
Induction Motors --- Ims --- Master/Slave --- Pi Speed Controller --- Pid Speed Controller --- Scalar Control Method.
This paper suggests the use of the traditional proportional-integral-derivative (PID) controller to control thespeed of multi Permanent Magnet Synchronous Motors (PMSMs). The PMSMs are commonly used in industrialapplications due to their high steady state torque, high power, high efficiency, low inertia and simple control of theirdrives compared to the other motors drives. In the present study a mathematical model of three phase four polesPMSM is given and simulated. The closed loop speed control for this type of motors with voltage source inverter andabc to dq blocks are designed. The multi (Master/Slaves approach) method is proposed for PMSMs. Mathwork'sMatlab/Simulink software package is selected to implement this model. The simulation results have illustrated thatthis control method can control the multi PMSMs successfully and give better performance.
Multi --- Master/Slave --- PMSMs --- PID speed controller --- VSI.
This study presents a speed control design for switchedreluctance motor (SRM) drive based on PID controller. Theapplications of Switched Reluctance Motors (SRMs) have beingincreased day by day, but this type of motors represents a highlynonlinear system, therefore there are a lot of difficulties inmodeling and controlling them. We have proposed a non-linearmathematical model of a four phases 8/6 poles SRM thensimulated it through Simulink/Matlab facilities. The wholecontrol mechanism consists of a hysteresis current controller tominimize the torque ripple and a PID speed controller. Thecontrol design results are then validated in real-time bySimulink/Matlab software package.
Inductance model --- Switched reluctance motor --- SRM --- PID Speed controller
This paper presents the use of two different controllers in speed control of multi permanent magnet synchronous motors (PMSMs) master/slaves system. These controllers used to improve the performance of multi PMSMs drive system are conventional PI and PD-like fuzzy + I controllers. For PD-like fuzzy + I speed controller, simulation results clearly show that the response of the system is superior as compared to PI speed controller in terms of rise time, settling time, accuracy, and steady state error. The design and analysis of the system with both controllers have been simulated and studied using MATLAB/Simulink environment. Speed responses obtained under PI and PD-like fuzzy + I controllers are compared for a variety of load conditions.
هذا البحث يستعرض استخدام متحكمين مختلفين للسيطرة على سرعة نظام (السيد/التوابع) لعدد من المحركات التزامنية ذات المغناطيس الدائم .هذين المتحكمين المستخدمين لتحسين أداء منظومة سوق المحركات هما متحكم الكسب التكاملي التقليدي ومتحكم المنطق المضبب المتداخل مع متحكم الكسب التكاملي التفاضلي .نتائج المحاكاة لمتحكم المنطق المضبب المتداخل مع متحكم الكسب التكاملي التفاضلي تؤكد تفوق استجابة النظام مقارنة مع متحكم الكسب التكاملي من حيث زمن الصعود ,زمن الاستقرار ,الدقة وأخطاء الحالة المستقرة .تم محاكاة ودراسة تصميم وتحليل النظام مع كلا المتحكمين باستخدام بيئة برنامج الماتلاب .استجابات السرعة التي تم الحصول عليها لكلا المتحكمين تمت مقارنتها لمجموعة منوعة من ظروف التحميل.
Multi --- Master/Slaves --- Pd-Like Fuzzy +I Speed Controller --- Permanent Magnet Synchronous Motors --- Pmsms --- Pi Speed Controller
An intelligent and anticipatory speed controller for internal combustion engines was designed theoretically and examined experimentally. This design was based on the addition of a torque loop to the main speed loop. The model can sense the external load with the help of a load cell and send this signal to a soft computing unit for analysis and processing. This scheme will improve the ability of anticipation of controller since it treats the factors that affect the speed, not the speed itself. The experimental design was implemented using two types of actuating techniques; an intelligent throttling actuator and an intelligent injection actuator. The signal was analyzed by using intelligent techniques such as fuzzy logic, neural network and genetic algorithm. The experimental data were used to train the neural and the Adaptive Neuro–Fuzzy Inference System. The comparison of the results obtained in this work with other available models proved the efficiency and the robustness of the present model.
Speed controller --- SI Engines --- Direct torque --- Fuzzy logic --- neural network --- Genetic algorithm --- ANFIS.
This paper presents a high performance brushless DC (BLDC) motor drive system that achieves optimal speed response with minimized torque ripple and low total harmonic distortion (THD). The speed controller is optimally tuned using particle swarm optimization (PSO) technique; and the torque ripple is minimized by using vector control instead of the six-step (trapezoidal control) and by using multilevel inverter to lower the THD of the voltages and currents. The proposed system alongside the traditional six-step technique, are modeled and simulated in MATLAB/Simulink program; and their simulation results are compared and discussed. The obtained results show that the proposed system speed response and torque ripple are greatly improved compared with the six-step technique.
Particle Swarm Optimization --- Speed Controller --- Vector Control --- BLDC Motor --- Multilevel Inverter.
In this paper the dynamic performance (speed regulation performance versus reference and load torque changes) of a separately excited D.C. motor is enhanced, the D.C. motor is fed by a D.C. source through a chopper which consists of GTO thyristor and free-wheeling diode. The motor drives a mechanical load characterized by inertia J, friction coefficient B, and load torque TL. The performance enhancement is achieved by using a speed control loop uses a proportional-integral (PI) controller which produces the reference signal for the current control loop and this is a (PI) current controller compares the sensed current with the reference and generates the trigger signal for the GTO thyristor to force the motor current to follow the reference. The simulation of the D.C. drive is performed using MATLAB/Simulink program version 7.10 (R2010a).
في هذا البحث قد تم تحسين الاداء الديناميكي (اداء تنظيم السرعه حسب تغير عزم الحمل) لمحرك التيار المستمر ذو التغذيه المنفصله لملفات الفيض المغناطيسي. المحرك تم تغذيته من قبل مصدر تيار مستمر و من خلال المقطع من نوع GTO و ثنائي الدوران الحر. المحرك يسوق حمل ميكانيكي ذو عزم قصور ذاتي J و معامل احتكاك B وعزم TL. ان تحسين الاداء قد تم باستعمال حلقة سيطرة السرعه والتي تستخدم المسيطر من النوع التناسبي التكاملي وهذه الحلقه تنتج اشارة المقارنه لحلقة سيطرة التيار و هذا المسيطر ايضا من النوع التناسبي التكاملي و الذى بدوره يقوم بمقارنة تيار المحرك الفعلي مع اشارة تيار المقارنه و ان ناتج المقارنه تكون اشارة القدح للمقطع GTO وذلك لجعل تيار المحرك بتتيع اشارة المقارنه. المحاكاة لسواقة التيار المستمر هذه قد تمت باستعمال برنامج الماتلاب.
D.C. motor --- D.C. drive --- GTO. PI controller --- speed controller --- current controller --- مقطع --- مسيطر تناسبي تكاملي --- محرك تيار مستمر --- مسيطر سرعه --- مسيطر تيار.
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